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24 lines
574 B
Go
24 lines
574 B
Go
package dnstap
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import "context"
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type contextKey struct{}
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var dnstapKey = contextKey{}
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// ContextWithTapper returns a new `context.Context` that holds a reference to
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// `t`'s Tapper.
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func ContextWithTapper(ctx context.Context, t Tapper) context.Context {
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return context.WithValue(ctx, dnstapKey, t)
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}
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// TapperFromContext returns the `Tapper` previously associated with `ctx`, or
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// `nil` if no such `Tapper` could be found.
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func TapperFromContext(ctx context.Context) Tapper {
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val := ctx.Value(dnstapKey)
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if sp, ok := val.(Tapper); ok {
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return sp
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}
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return nil
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}
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